user
Write a response that appropriately completes the request.

### Instruction:
Name some different types of magnetic materials.

### Response:
assistant
Magnetic materials can be broadly classified into three categories: ferromagnetic materials, paramagnetic materials, and diamagnetic materials. Ferromagnetic materials are strongly attracted to magnets and can retain a magnetic field. Examples of ferromagnetic materials include iron, cobalt, nickel, and some alloys. Paramagnetic materials are also attracted to a magnetic field, but are weaker than ferromagnetic materials. Examples of paramagnetic materials include aluminum, platinum, and some rare earth metals. Diamagnetic materials are materials that are weakly repelled by a magnet, such as water, wood, and plastic.